CN218141204U

CN218141204U - Pedal telescopic mechanism of seat

Info

Publication number: CN218141204U
Application number: CN202222309252.5U
Authority: CN
Inventors: 石章能; 张明; 陈志勇
Original assignee: Chongqing Adient Automotive Components Co Ltd
Current assignee: Chongqing Adient Automotive Components Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-27
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a pedal telescopic mechanism of a seat, which comprises a pedal bracket, wherein the pedal bracket comprises a support rod which is oppositely arranged on the left and the right, the support rod comprises a support rod body, a support rod sleeve is arranged on the support rod body in a sliding way, and a pedal plate is transversely connected between the two support rod sleeves; a sliding limiting structure and an elastic resetting mechanism are arranged between the support rod sleeve and the support rod body; the elastic reset mechanism stores elastic potential energy when the support rod sleeve slides forwards under the thrust, and releases the elastic potential energy after the thrust is relieved so as to reset the support rod sleeve backwards. The utility model has the advantages that: the sliding extension of the two support rods is adapted to passengers with different shapes, and the elastic reset mechanism can provide elastic force, so that the foot pedal always supports the feet of the passengers, and the adjustability and the comfort of the seat are improved.

Description

Pedal telescopic mechanism of seat

Technical Field

The utility model relates to the technical field of seats, concretely relates to pedal telescopic machanism of seat.

Background

The comfort of the vehicle seat is related to the comfort of the occupant. To improve seat comfort, some vehicle seats meet the diverse seating needs of different occupants by providing rich support and adjustment structures. For example, a common seat is generally provided with only functions of backrest angle adjustment and seat position front-back adjustment, and in some high-end seats, adjustable seat leg supports and pedals are important means for improving the riding comfort of passengers. For the seat with high requirement on comfort index, on one hand, the pedal structure must be suitable for the application requirements of passengers with different heights and body types, and on the other hand, due to the large-angle adjustment of the pedal, the support, the driving mechanism and the like of the pedal structure have the possibility of mutual influence with other parts of the seat. Thus, in a confined space, both the adjustability of the footrest structure and the occupation of the space in the vehicle must be taken into account.

Patent document No. 201501321U discloses a seat, a seat disc is connected with a backrest through an elevation device, a leg support and a pedal are further connected to the seat disc, the leg support is divided into two sections, namely a first section leg support and a second section leg support, the first section leg support is rotatably connected with a base, the second section leg support is arranged on the first section leg support in a sliding mode, the pedal is rotatably connected with the second section leg support, and a rotating shaft of the pedal is mounted at the end portion of the second section leg support. The seat adapts to the sitting states of passengers with different shapes by stretching and contracting the leg supports. The novel rotary type pedal structure with the controllable angle can keep static at any position within a certain angle range, so that the novel rotary type pedal structure can better adapt to the postures of the lower leg and ankle joint of a passenger, and the riding habits of different passengers are met. However, the rotary pedal structure also needs to adapt to the body shapes of passengers with different leg lengths so that the passengers can use the seat in the most comfortable state.

SUMMERY OF THE UTILITY MODEL

In view of this, for the adaptability problem of solving pedal to the passenger of different leg length, the utility model provides a pedal telescopic machanism of seat.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

a pedal telescopic mechanism of a seat comprises a pedal support and is characterized in that the pedal support comprises support rods which are oppositely arranged at the left and the right, each support rod comprises a support rod body, a support rod sleeve is slidably arranged on each support rod body, and a pedal is transversely connected between the two support rod sleeves;

a sliding limiting structure and an elastic resetting mechanism are arranged between the support rod sleeve and the support rod body;

the elastic reset mechanism stores elastic potential energy when the support rod sleeve slides forwards under the thrust, and releases the elastic potential energy after the thrust is relieved so as to reset the support rod sleeve backwards.

By adopting the design, the seat adapts to passengers with different shapes through the sliding extension of the two support rods, and the elastic reset mechanism can provide elastic force, so that the foot pedal always supports the feet of the passengers, and the adjustability and the comfort of the seat are improved.

As a preferred technical solution, the sliding limiting structure includes a long hole penetrating through the support rod body, and a limiting bolt movably penetrating through the long hole, and the limiting bolt is fixedly connected with the support rod sleeve;

the elongated hole is arranged along the length direction of the support rod body.

According to a preferable technical scheme, the support rod body is flat, two side faces of the support rod body face the left side and the right side of the seat framework respectively, one upward side of the front portion of the support rod body is provided with a sliding notch, the sliding notch extends to the front end of the support rod body, the support rod sleeve is sleeved on the support rod body corresponding to the sliding notch, and the upper surface of the support rod sleeve is not larger than the upper edge of the support rod body.

As a preferred technical scheme, the elastic reset mechanism comprises a reset tension spring, one end of the reset tension spring is connected with the support rod body, the other end of the reset tension spring is connected with the support rod sleeve or the pedal, and the telescopic direction of the reset tension spring is parallel to the sliding direction of the support rod sleeve.

As a preferred technical scheme, the reset tension springs are respectively arranged close to the two support rods and are positioned on the inner side of the support rod body;

one end of the reset tension spring is hung on the hanging lug on the support rod body, and the other end of the reset tension spring is hung at the end part of the pedal.

As a preferred technical scheme, the strut sleeve is formed by bending a pair of opposite edges of a plate to the same side of the plate, and the cross section of an inner hole of the strut sleeve is a round-corner rectangle;

the limiting bolt penetrates through the opposite pipe wall of the support rod sleeve.

The utility model has the advantages that: the sliding extension of the two support rods is adapted to passengers with different shapes, and the elastic reset mechanism can provide elastic force, so that the foot pedal can always support the feet of the passengers, and the adjustability and the comfort of the seat are improved.

Drawings

FIG. 1 is a schematic view of a footrest bracket of a chair footrest in a deployed position;

FIG. 2 is an enlarged view of the portion m in FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 4 is a schematic view of the footrest bracket of the chair footrest in a stowed position;

fig. 5 is a schematic view of the structure of fig. 4 from another view angle.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

Example one

As shown in fig. 1 and 2, the pedal extension mechanism for a seat comprises a pedal support 200, wherein the pedal support 200 comprises a support rod 210 which is arranged oppositely left and right, the support rod 210 comprises a support rod body 211, a support rod sleeve 212 is arranged on the support rod body 211 in a sliding manner, and a pedal 220 is transversely connected between the two support rod sleeves 212. A sliding limiting structure and an elastic reset mechanism are arranged between the support rod sleeve 212 and the support rod body 211. The elastic reset mechanism stores elastic potential energy when the strut sleeve 212 slides forward under the pushing force, and releases the elastic potential energy after the pushing force is released so as to reset the strut sleeve 212 backward.

Specifically, the sliding limiting structure includes a long hole 213 penetrating through the support rod body 211, and a limiting bolt 214 movably disposed in the long hole 213, and the limiting bolt 214 is fixedly connected to the support rod sleeve 212. The elongated hole 213 is formed along the length direction of the strut body 211. The limit bolt 214 slides in the elongated hole 213, so that the front and rear ends of the elongated hole 213 form limit positions of the limit bolt 214.

The utility model discloses a chair support, including branch body 211, branch sleeve 212, slip breach, branch sleeve 212, branch body 211 is the platykurtic, the both sides face of branch body 211 is respectively towards the left and right sides of seat skeleton, the slip breach has been seted up to the anterior one side up of branch body 211, should slide the breach and extend to the branch body 211 front end, branch sleeve 212 cover is in on the branch body 211 that the slip breach corresponds, branch sleeve 212 upper surface is no longer than branch body 211 upper edge. With this design, when the post sleeve 212 is repositioned, the upper surface of the post 210 is flush and more compact when the foot pedal is retracted.

The elastic reset mechanism comprises a reset tension spring 230, one end of the reset tension spring 230 is connected with the pole body 211, the other end of the reset tension spring is connected with the pole sleeve 212 or the pedal 220, and the stretching direction of the reset tension spring 230 is parallel to the sliding direction of the pole sleeve 212.

The two support rods 210 are respectively provided with the reset tension springs 230, and the reset tension springs 230 are located on the inner sides of the support rod bodies 211. One end of the return tension spring 230 is hung on the hanging lug of the strut body 211, and the other end is hung on the end of the pedal 220. Such a design allows the two strut sleeves 212 to slide synchronously, maintaining stability. And the position of the return tension spring 230 does not contact the lower leg of the passenger.

For convenient production, the strut sleeve 212 is formed by bending a pair of opposite edges of a plate material to the same side of the plate material, and the cross section of an inner hole of the strut sleeve 212 is in a round-corner rectangular shape. The limit bolt 214 is arranged on the opposite wall of the support rod sleeve 212 in a penetrating mode.

Example two

As shown in fig. 1 and 3, a chair footrest comprises a chair frame, the front part of the chair frame is hinged with a footrest support 200 through a rotating support 110, a link mechanism is further connected between the footrest support 200 and the chair frame, the link mechanism is used for driving the footrest support 200 to unfold forwards when the rotating support 110 rotates forwards, and driving the footrest support 200 to retract backwards and fold the rotating support 110 from below when the rotating support 110 rotates backwards. The pedal bracket 200 has a pedal retracting mechanism according to the first embodiment.

Because the seat adopts the bearing structure of rotary type to support pedal support 200 to pedal support 200 can rotate support piece 110 relatively again, thereby realizes pedal structure's rotation and folding, not only makes the regulation structure more nimble, has reduced the space occupation when accomodating again. In addition, the angle of the pedal bracket 200 relative to the seat frame can be adjusted within a wide range by controlling the rotation angle, and the requirement of passengers with different shapes can be met by arranging the sliding extension mechanism, so that the adjustability and the comfort of the seat are improved.

The rotating support 110 is a first connecting rod, the rear end of the first connecting rod is rotatably connected to the seat frame, and the front end of the first connecting rod is hinged to the pedal bracket 200. The rear end of the link mechanism is hinged with the seat framework, and the front end of the link mechanism is fixedly connected with the pedal bracket 200. The link mechanism, the first link and the seat framework form a four-link mechanism. Preferably, the four-bar linkage is a parallelogram linkage.

The link mechanism comprises a second link 120 and a third link 130 hinged to each other, the rear end of the second link 120 is hinged to the seat frame, the other end of the second link is hinged to one end of the third link 130, and the front end of the third link 130 is fixedly connected to or integrally formed with the pedal bracket 200.

In a simple and controllable structure, the rotary support 110 is connected to the seat frame through a pedal recliner 140, the pedal recliner 140 includes a first link plate 141, a second link plate 142 and a core 143 connecting the first link plate 141 and the second link plate 142, the first link plate 141 is fixedly connected to the seat frame, and the second link plate 142 is formed by the rotary support 110. The step recliners 140 are concentric recliners.

For the convenience of installation, the link mechanism and the second link plate 142 are located on the same side of the first link plate 141. The second connecting rod 120 is arc-shaped, the second connecting rod 120 has an arc-shaped concave surface 121 corresponding to the portion of the second link plate 142 corresponding to the core part 143, and the arc-shaped concave surface 121 and the second link plate 142 form a protrusion limiting structure. As shown in FIGS. 1 and 3, when the pedal bracket 200 is extended forward, the curved concave surface 121 abuts against the second yoke plate 142 to be restrained.

A limit notch 144 is formed in one side of the second link 142 facing the second link 120, and the hinge shafts of the second link 120 and the seat frame are matched with the limit notch 144 to form a retraction limit structure. As shown in fig. 4 and 5, when the pedal bracket 200 is retracted rearward, the catching notch 144 abuts against the corresponding hinge shaft to catch.

The rotating support 110 includes a second link plate 142 and a connecting rod, wherein one end of the second link plate 142, which is far away from the core 143, is connected to one end of the connecting rod through a bolt, and the other end of the connecting rod is hinged to the front end of the third connecting rod 130.

In one embodiment, the seat frame includes a seat frame 400, a leg support frame 300 is rotatably connected to the front portion of the seat frame 400, and both sides of the front end of the leg support frame 300 are respectively connected to the supporting rods 210 on the same side through a rotating support member 110 and a link mechanism.

The strut body 211 is disposed along the extending direction of the third connecting rod 130, the rear end of the strut body 211 is fixedly connected to the third connecting rod 130, and the front end of the strut body 211 extends forward.

When the seat is pedaled in the storage position, the pedal angle adjuster 140 drives the rotating support 110 to rotate backward, and at this time, the third connecting rod 130 rotates backward with the pedal bracket 200 and approaches the first connecting plate 141, so that the pedal bracket 200 is stored under the rotating support 110. When the rider uses the seat, the pedal recliner 140 drives the rotary support 110 to rotate forward, and the pedal bracket 200 is rotated forward and extended through the four-bar linkage. Because the angle adjuster can be positioned at any angle, the extending angle and the position of the pedal bracket 200 can be flexibly adjusted. When the foot rest 200 is fully deployed forward, the footrests 220 of the foot rest 200 are higher than the extension line of the upper surface of the leg rest, thereby facilitating the occupant to step on the footrests 220. For occupants of different shapes, stepping on the foot board 220, the sliding extension mechanism can adaptively slide to an appropriate position to accommodate the position of the occupant's foot. When the passenger leaves, the reset tension spring 230 drives the rod sleeve 212 and the pedal 220 to reset.

In order to enable the lower legs of the passengers to be supported on the leg supports more stably, two grooves 310 are formed in the upper surface of the front end of the leg support framework 300, and the two grooves 310 are respectively close to the left side and the right side of the front end of the leg support framework 300.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. A pedal telescopic mechanism of a seat comprises a pedal bracket (200) and is characterized in that: the pedal support (200) comprises support rods (210) which are oppositely arranged at the left and the right, each support rod (210) comprises a support rod body (211), a support rod sleeve (212) is arranged on each support rod body (211) in a sliding mode, and a pedal (220) is transversely connected between the two support rod sleeves (212);

a sliding limiting structure and an elastic reset mechanism are arranged between the support rod sleeve (212) and the support rod body (211);

the elastic reset mechanism stores elastic potential energy when the strut sleeve (212) slides forwards under thrust and releases the elastic potential energy after the thrust is removed so as to reset the strut sleeve (212) backwards.

2. The seat footrest extension mechanism of claim 1, wherein: the sliding limiting structure comprises a long hole (213) penetrating through the support rod body (211) and a limiting bolt (214) movably penetrating through the long hole (213), and the limiting bolt (214) is fixedly connected with the support rod sleeve (212);

the elongated hole (213) is provided along the length direction of the strut body (211).

3. The seat footrest extension mechanism of claim 2, wherein: the utility model discloses a chair, including branch body (211), branch sleeve pipe (212), slip breach, branch sleeve pipe (212) upper surface is no longer than branch body (211) upper edge, branch body (211) is the platykurtic, the both sides face of branch body (211) is respectively towards the left and right sides of seat skeleton, slip breach has been seted up to the anterior one side up of branch body (211), and this slip breach extends to branch body (211) front end, branch sleeve pipe (212) cover is in on the branch body (211) that the slip breach corresponds.

4. The seat footrest extension mechanism of claim 2 or 3, wherein: the elastic reset mechanism comprises a reset tension spring (230), one end of the reset tension spring (230) is connected with the strut body (211), the other end of the reset tension spring is connected with the strut sleeve (212) or the pedal (220), and the telescopic direction of the reset tension spring (230) is parallel to the sliding direction of the strut sleeve (212).

5. The seat footrest extension mechanism of claim 4, wherein: the reset tension springs (230) are respectively arranged close to the two support rods (210), and the reset tension springs (230) are positioned on the inner side of the support rod body (211);

one end of the reset tension spring (230) is hung on the hanging lug on the support rod body (211), and the other end is hung on the end part of the pedal (220).

6. The seat footrest extension mechanism of claim 5, wherein: the strut sleeve (212) is formed by bending a pair of opposite edges of a plate to the same side of the plate, and the cross section of an inner hole of the strut sleeve (212) is a round-corner rectangle;

the limiting bolt (214) penetrates through the opposite pipe wall of the support rod sleeve (212).